A drill including a drill spindle capable of driving a cutting tool in movement. The drill has at least one channel for distributing a lubricant to the cutting tool, a pump to supply the channel with lubricant and control element(s) for controlling the flow rate of the pump. Such a drill further has mechanical element(s) for determining at least one piece of information representing the torque exerted on the spindle along its axis during drilling. The control element(s) act on the flow rate of the pump as a function of the torque exerted on the spindle along its axis during drilling.

There is described herein methods and system for correcting steady state errors in propeller speed by calculating a leakage flow rate as a function of engine and propeller parameters.

There is described herein methods and system for correcting steady state errors in propeller speed by calculating a leakage flow rate as a function of engine and propeller parameters.

An adaptive lubrication control method used in an adaptive lubrication control system for a machining center having an axial system comprises a controller and a lubricating system. The method uses a built-in macro program unit and programmable logic unit of the controller to acquire the feed rate and load data of the axial system of the machining center for computing the shift parameter of the axial system so that the optimal lubrication timing and lubrication time length can be figured out for controlling the lubricating system to lubricate the axial system automatically.

A lubricant dispenser has at least one lubricant reservoir, an electromechanical drive which acts on at least one actuation element for discharging lubricant from the lubricant reservoir, a battery which provides a battery voltage, and a control circuit-board assembly which has at least one main circuit board having an electronic circuit assembly including at least one central microcontroller and additional electronic functional components as well as conductor tracks. The electronic circuit assembly is subdivided into a plurality of circuit islands in each of which the maximum current flowing within the circuit island in question is limited.

A lubricant injection system is provided, which includes a pedestal, a robotic arm including a plurality of arm bodies sequentially coupled from pedestal, lubricant injecting hand having a discharge part configured to be sequentially coupled to each of a plurality of filler ports of a target machine, robot control device configured to control operation of robotic arm, a lubricant pumping device in which pumping of lubricant is controlled, a lubricant pumping channel configured to lead lubricant from the lubricant pumping device to the discharge part, and a flow rate sensor provided to the lubricant pumping channel and configured to send the detected flow rate information to the robot control device. Robot control device calculates an injection quantity based on the flow rate information sent from flow rate sensor, and when calculated injection quantity reaches target injection quantity, robot control device controls to stop pumping of lubricant.

A protection mechanism for a lubricant reservoir is mounted within a valve protection chamber disposed on an actuator. The protection mechanism includes a valve actuating plate and an elastic member biasing the valve actuating plate upwards. The actuator is pushed upwards by a rising level of lubricant as the lubricant reservoir is filled. When the reservoir is full, the actuator causes the valve actuating plate to contact a valve stem. The valve actuating plate pushes the valve stem up to shut off a flow of lubricant to the reservoir through the shut off valve. During an overfill event the actuator shifts upward due to the rising level of the lubricant in the reservoir. As the actuator shifts upward, the elastic member compresses such that valve actuating plate remains static relative to the lubricant reservoir as actuator rises.

A vent valve for an actuator disposed in a lubricant reservoir includes a bore extending through the plate, a seal disposed within the bore proximate a top surface of the plate, a retaining member extending about a lower opening of the bore, and a ball disposed within the bore between the seal and the retaining member. The vent valve is configured to allow air to pass from a lower portion of a lubricant reservoir as lubricant fills the lower portion. The vent valve also allows air to pass to the lower portion of the lubricant reservoir as lubricant is dispensed from the reservoir. The vent valve closes when the lubricant level reaches the vent valve, thereby preventing lubricant from flowing through the vent valve. The sealed vent valve allows the actuator to rise in response to a rising lubricant level.

An autofill shutoff valve includes a valve body mounted to a lubricant reservoir and secured to a fill tube extending into the reservoir. The autofill shutoff valve has a valve stem extending through the valve body and into the lubricant reservoir. The valve stem is actuated by a plate disposed within the reservoir from a first position, wherein lubricant flows from a lubricant inlet to a lubricant outlet through the valve body, to a second position, wherein the valve stem blocks the flow of lubricant through the valve body. The autofill shutoff valve provides lubricant directly to the reservoir, thereby eliminating external plumbing and the autofill shutoff valve also prevents overfill of the reservoir by cutting off the flow when the reservoir is full.

A centerfill assembly for a lubricant reservoir includes a hollow tube for receiving lubricant from the top of the reservoir and loading the lubricant into the reservoir near the bottom of the reservoir. Loading the lubricant near the bottom of the reservoir introduces lubricant near where the stirring paddles mix the lubricant and near where the lubricant is loaded to the lubricant pump. Adding the lubricant near where the pumps load and near the stirring paddles helps to eliminate air pockets in the lubricant. In addition, having the centerfill rod minimizes exterior plumbing and allows for the mounting of valves on the fill line